Benz[a]anthracene, Triphenylene, and Chrysene on Rxi-PAH After Repeated Matrix Injections

Injection
Column	Rxi-PAH, 40 m, 0.18 mm ID, 0.07 µm (cat.# 49316)
Standard/Sample	Custom PAH standard
Diluent:	Toluene
Inj. Vol.:	0.5 µL pulsed splitless
Liner:	Premium 2 mm single taper w/wool (cat.# 23316.1)
Inj. Temp.:	275 °C
Pulse Pressure:	80 psi (551.6kPa)
Pulse Time:	0.6 min
Purge Flow:	40 mL/min
Oven
Oven Temp.:	110 °C (hold 1 min) to 210 °C at 35 °C/min to 260 °C at 3 °C/min to 350 °C at 10 °C/min (hold 4.5 min)
Carrier Gas	He, constant flow
Flow Rate:	1.4 mL/min

Detector	FID @ 360 °C
Make-up Gas Flow Rate:	45 mL/min
Make-up Gas Type:	N₂
Hydrogen flow:	40 mL/min
Air flow:	450 mL/min
Instrument	Agilent 7890A GC
Sample Preparation	The experiment was carried out as follows: - Oysters and paprika were extracted using QuEChERS methodology. - dSPE cleanup was performed on oyster extracts. - Cartridge cleanup was performed on paprika extracts. - Oyster and paprika extracts were injected, interspersed with solvent standard, to monitor performance.
Notes	1 m was trimmed from the column and the liner was changed during the course of the experiment.

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